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CVE-2020-1900

nvd nist
Published: Mar 11, 2021Modified: Nov 21, 2024

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9.8
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitability: 3.9 / Impact: 5.9
Source: NVD

Description

When unserializing an object with dynamic properties HHVM needs to pre-reserve the full size of the dynamic property array before inserting anything into it. Otherwise the array might resize, invalidating previously stored references. This pre-reservation was not occurring in HHVM prior to v4.32.3, between versions 4.33.0 and 4.56.0, 4.57.0, 4.58.0, 4.58.1, 4.59.0, 4.60.0, 4.61.0, 4.62.0.

Affected (9)

Products: Facebook: Hhvm
Facebook
1 product
Hhvm
Configuration A
9 vulnerable
Vulnerable SoftwareAffected Versions
Facebook
Hhvm
Before 4.32.3
Hhvm
From 4.33.0 to 4.56.1
Hhvm
Version 4.57.0
Hhvm
Version 4.58.0
Hhvm
Version 4.58.1
Hhvm
Version 4.59.0
Hhvm
Version 4.60.0
Hhvm
Version 4.61.0
Hhvm
Version 4.62.0

Related CWEs

CWE-416
Use After Free
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

References (4)

Source: cve-assign@fb.com
PatchThird Party Advisory
Source: cve-assign@fb.com
Vendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
PatchThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory

Timeline

No history available yet.